Inline sifter

Abstract

A booster 8 extending in an internal area 53 of a sieve 7 is attached to the outer circumferential face of a rotating shaft 6 . The booster 8 has four blades 82 , which are radially extended from the outer circumferential face of the rotating shaft 6 and are arranged at preset angles (for example, 90 degrees) to form a pi shape from the front view. The booster 8 has multiple (for example, two) cross-shaped radial members 81 that are arranged radially at a little angle (for example, 3 degrees) and are located on both ends of the rotating shaft 6 via a preset space, the blades 82 that are set in and fixed to the respective ends of each of the radial members 81 and are inclined at a preset angle to the axial direction of the rotating shaft 6 , and sheet-like scrapers 83 that are attached to the blades 82 to be a little projected outward in the radial direction. The end of each scraper 83 faces the inner circumferential face of the sieve 7 across a little gap. Each of the radial members 81 has a round opening 81 a on the center thereof to receive and fix the rotating shaft 6 passing therethrough.

1. An inline sifter, comprising:
 a gas-powder mixture receiving module, provided with a supply chamber, which receives a mixture of a gas and a pneumatically transported powdery material from a gas-powder mixture inlet; 
 a sieving module, provided with a sieving chamber, which laterally communicates with said supply chamber of said gas-powder mixture receiving module; 
 a rotating mechanism, provided with a rotating shaft, which is laterally extended inside said supply chamber and said sieving chamber; 
 a cylindrical sieve arranged such that said rotating shaft extended in said sieving chamber passes through a center thereof; 
 a wind power amplifier located in an internal area of said sieve and having multiple blades fixed to said rotating shaft to amplify wind power and pressing said powdery material out from said internal area of said sieve toward an external area; 
 a removal member used to remove a remaining powdery material and/or foreign substances, which has not passed through said sieve, from said internal area of said sieve; and 
 an outlet which discharges a sieved powdery material that has passed through said sieve from said internal area toward said external area, 
 wherein said gas-powder mixture, which is supplied by said gas-powder mixture inlet in a circumferential direction from a circumferential face of said supply chamber, flows around said rotating shaft, and is fed into said sieving chamber, 
 wherein said supply chamber has a cylindrical shape, and said gas-powder mixture inlet is connected to said supply chamber in said circumferential direction of said circumferential face of said supply chamber along a line tangential to said circumferential face of said supply chamber, and 
 wherein said multiple blades laterally extend inside said supply chamber and said receiving chamber to stir the gas-powder mixture supplied by the gas-powder mixture inlet. 
 
   
   
     2. The inline sifter in accordance with  claim 1 , wherein said wind power amplifier comprises:
 multiple support members radially extending from said rotating shaft, 
 wherein said multiple blades are joined with said support members and extend in a direction inclined to an axial direction of said rotating shaft, where respective ends of said multiple blades are located close to an inner circumferential face of said sieve. 
 
   
   
     3. The inline sifter in accordance with  claim 1 , wherein all or any one of said multiple blades are extended from said internal area of said sieve to said supply chamber of said gas-powder mixture receiving module. 
   
   
     4. The inline sifter in accordance with  claim 1 , wherein said sieving module has a side opening, said sieve is accessible and replaceable via said side opening, and said removal member is an inspection door that opens and closes said side opening and enables said remaining powdery material and/or foreign substances, which has not passed through said sieve, to be taken out of said internal area of said sieve. 
   
   
     5. The inline sifter in accordance with  claim 1 , wherein said rotating shaft has one cantilevered end on the side of said gas-powder mixture receiving module and the other free end extended to a middle of said sieve.